Rotary fluid power device



Feb, 18, 1941. l F. FEHN 2,232,599

` i ROTARY FLUID POWER DEVICE Filed sgpt. 1e, '1939 2 shams-sheet 1 7. lf M2@ W ROTARY FLUmPow-En DEVICE `Filed. slept. 16, 1959 2sheets-sheet.;

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.Fmg/a 3M Patented Feb; 18, 1941 UNITED STATES 4PATENT OFFICE i normarruzrrzlzrsvsn nnvxon Frank l. Fehn, Canton. O hio Applicltin september16, 1939, sl'lil NQ. 295,298

4 calms. (ci. los-asa) .The invention relates to rotary fluidpower'devices which may be power driven so as to operate as a pump orcompressor; or which may be driven byuid pressure so as to operate as .a5 motor. v T

The object of the invention is to provide a aimpie, inexpensive andeilicient rotary apparatus for use in the class of machines throughwhich fluids are passed for circulating or compression,

l0 or which are operated by fluid under pressure in order to developpower.

Another object is tov provide a rotary apparatus 4of the characterreferred to in which a plurality of impelle'r vanes are carried in therotor of the apparatus and provided with tapered ends arranged to ridearound a tapered channel in the stationary housing. 4

Another object is to provide an annular abutment in the annular channelof the housing having inclined ends over which the impeller venes traveland provided with elongated ports communicating with the intake anddischarge lines for the fluid. l A further object is to provide a solidrotor head havingl radial slots through which the impeller vanesoperate.

A further object is to have relief channels alongside of the impellervanes or blades.

-A still further object is to provide an end adjustment upon the shaftof the rotor.

The above objects together with others which will be'apparent from thedrawings .and following description may be attained by constructing theimproved fluid power device in the manner illustrated in the drawings inwhich Y 1 Figure `1. is a longitudinal sectional "view through the uidpower apparatus the invention;

40 rig. 2. a section on the une 2 2, Fig.- 1 with the rotor removed;

Eg. 3, a detached perspective. view with on of the impeller vanes orblades;

Fig. 4, a section on the line H, rig. 1; Fig. 5. a'section on the lineH, Fig. 1; and

Eg. 6.a section on the line O-I, ng. 5. a Similar numerals-.refer,tosimilar parts 'throughout the several views.

`The housing is formed of two sections indicated generally at n andwmcnsre provides with eomplementnl-flanges l2 preferablyinterattachedtogether as by the bolts Il..

1ockedasat,toprovideauidlhtiointand' smmng boxes lema nare rormedm the;y housingmembersit andil.respectively.to pre -l vent leakage around the'shaft n. 'nils shan is journaled in a bali-bearing Il carried at theouter end of the reduced neck i9 of the housing member Il and in aroller bearing 20 carried in the bearing bracket 2l at the outer end ofthe hous- 5 ing member I0. Y

This end of the shaft I1 may be threaded as at 22 to receive'anadjusting nut 23 and washer 24 to provide end adjustment of the shaft.

The opposite end of the shaft I1 may be pro- 1.0-

vided with a pulley, sprocket, or its equivalent for connecting theshaft to a motor or engine when the apparatus is used as a pump orcompressor or for connecting it to any mechanism to be driven when theapparatusis used as a motor or power 15 'A tapered annular channel 25 isformed in th housing member I0 and at one point thereon an annularabutment 2i is formed and provided with the inclined ends 21 in whichare formed the 20 elongated ports 2l covering substantially the entirearea of the inclined surfaces 21 and communicating with the passages 29to whichlare connected the fluid inlet and outlet pipes 30.

The. rotor is in the form of a solid cylindrlc 25 head 8| xed upon theshaft l1 as by a pressed fit or otherwise with its outer end abuttingthe shoulder 22 upon the shaft.

A cup 33 surroundsthe oter end and sides of the rotor 3i and has thereduced peripheral edge 30 `34 rotatably mounted within the annulargroove 35 formed in the housing member i0 surround-l ing the'taperedchannel 25 therein.

Radial slots 36 are formed through the solid rotor 3l extending from apoint near the center 35 thereof through the peripheral edge, and theimpeiler vanes or blades 31 are slidably mounted within these slots andprovided with tapered inner ends 38 adapted to be urged into the taperedchannel 26 of the housing by means of coil springs 40 l! located insockets Il in the outer ends of the Vblades and against the cupv.

VThe inner end of each impeller vane or blade is preferably bevelled asindicated at 4I, the

edge I2 riding against the bottom of the tapered 45 or compressor, theshaft il is driven at the de sired speed by means of a motor or otherprime mover, and the uid to be pumped or compressed is admitted throughone ci the pipes 3@ to the corresponding passage 2e and through thecorresponding ports ZEE.

1 uw. vthat the apparatus is being used as a pump or compressor and theshaft il power driven in the direction of the arrows shown in `Figs. l,2 and i, the right hand pipe Sil, as viewed in Fig. 2, will be the inletpipe and the left hand pipe dit in said figure is the outlet pipe.

As the uid is admitted through the ports 2t on the right hand inclined.end 2l' oi the abutment 2t, the uid will he carried around the taperedchannel 2% in clockwise direction by means oi the impeller blades orvaries iii riding down said right hand inclined surface 2l and aroundthe channel 25 and will be discharged through the ports 2i? in the lefthandinclined end 2l of the abutment 255, the duid being dischargedthrough the left hand pipe Sil.

In the event it is desired to use the apparatus as a iiuid power device,the iiuid will be adrntted under pressure through one of the pipes t@and exhausted through the other pipet, this uid under pressure forcingthe impeller vanes or blades and the rotor in which they are earried torotate within the housing and any de- ,sired apparatus may 'be drivenfrom the rotating shaft il.

I claim: v

l. A rotarf,r uid power device -comprising a housing having an annulartapered channel therein, an abutment in said channel having a -channel,and resilient means ior urging said blades into said channel, e. taperedroller hearing upon one end of the rotor-shaft, the adia cent portion ofthe shaft being screw-threaded and anut upon the threaded portion or theshaft engaging the roller bearing for axially adjusting the rotor.v l

2. A rotary duid power device comprising a housing having an annularchannel therein, an abutment in said channel having inclined endsaasasoo provided with ports, duid inlet and discharge meanscommunicating with said ports, an axial shaft journaled through thehousing, a solid rotor on said shaft having radial slots therein openthrough the periphery thereof, impeller blades axially slidably mountedin said slots. a cup surrounding said rotor and secured thereto torotate therewith, an annular groove in the housing, surrounding saidannular channel, in which the edge of said cup is slidabiy located, andresilient means between each blade and the cup for urging the bladesinto' the annular channel.

3. .d rotary fiuid power device comprising a housing having an annulartapered channel therein, an abutment in said channel having ingatedports extending over substantially the entire areas of each oi saidinclined ends, uid

inlet and discharge means communicating with said ports, an axial shaftjournaled through the housing, a solid rotor on said .shaft havingradial slots therein, impeller blades axially slidably mounted in-saidslots and having tapered ends slidably fitting said tapered channel,resilient means for urging said blades into said channel, longitudinalgrooves in said rotor communicating with said slots, a tapered rollerbearing at one end oi the rotor shaft, the adjacent portion of the shaftbeing screw-threaded and a nut upon the threaded portion ofthe shaftengaging the roller bearing for axially adjusting the rotor.

d. A rotary fluid power device comprising a housing having an annular,tapered channel therein, an abutment in said channel having oppositelyinclined endsvprovided with elongated ports, duid inlet and dischargemeans communicating with said ports, an axial shaft journaied throughthe housing, a solid rotor on said shaft having radial slots exten-dingaxially entirely therethrough and open through the periphery thereof,impeller blades axially slidably mounted in said slots and havingtapered inner ends slidably ntting said tapered channel, a cupsurrounding the outer end and sides of said rotor and secured thereto torotate therewith and springs between the impeller 'blades and the cupfor normally urging the tapered inner ends of the blades into saidtapered channel.

FRANK P. FEI-IN.

